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From: "Andrew Jeffery" <andrew@aj.id.au>
To: "Linus Walleij" <linus.walleij@linaro.org>
Cc: "Linux LED Subsystem" <linux-leds@vger.kernel.org>,
	"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
	"Cédric Le Goater" <clg@kaod.org>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Joel Stanley" <joel@jms.id.au>, "Pavel Machek" <pavel@ucw.cz>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	"Linux ARM" <linux-arm-kernel@lists.infradead.org>,
	linux-aspeed <linux-aspeed@lists.ozlabs.org>,
	linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 1/6] pinctrl: Add pinctrl_gpio_as_pin()
Date: Wed, 11 Aug 2021 09:54:53 +0930	[thread overview]
Message-ID: <53199b3e-a711-4071-96a3-7836d3323906@www.fastmail.com> (raw)
In-Reply-To: <CACRpkdZ4A3Lw2U+_jXfbuXJFhpesi3SzNN1Codqxi4sLNu5zPw@mail.gmail.com>



On Tue, 10 Aug 2021, at 23:04, Linus Walleij wrote:
> On Fri, Jul 23, 2021 at 9:59 AM Andrew Jeffery <andrew@aj.id.au> wrote:
> 
> > Allow gpiochips to map the GPIO numberspace onto a pin numberspace when
> > the register layout for GPIO control is implemented in terms of the
> > pin numberspace.
> >
> > This requirement sounds kind of strange, but the patch is driven by
> > trying to resolve a bug in the leds-pca955x driver where this mapping is
> > not correctly performed.
> >
> > Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
> 
> (...)
> 
> Hm  this looks a bit strange...
> 
> > +int pinctrl_gpio_as_pin(struct pinctrl_dev *pctldev, unsigned int gpio)
> 
> This is not a good name for this function. Try to come up with
> a name that says exactly what the function does.
> 
> E.g. "apple pear as apple slice" isn't very helpful, the use case for
> this is really hard to understand.

That's probably because I shouldn't be trying to do what I'm doing :)

I'll stop doing that (i.e. rework patch 4/6) and this will go away entirely.

> 
> > +EXPORT_SYMBOL_GPL(pinctrl_find_gpio_range_from_pin);
> 
> This looks completely wrong.

Yeah, whoops. That was an oversight while iterating on the patch.

Andrew

  reply	other threads:[~2021-08-11  0:25 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-23  7:58 [RFC PATCH 0/6] leds: Fix pca955x GPIO pin mappings Andrew Jeffery
2021-07-23  7:58 ` [RFC PATCH 1/6] pinctrl: Add pinctrl_gpio_as_pin() Andrew Jeffery
2021-08-10 13:34   ` Linus Walleij
2021-08-11  0:24     ` Andrew Jeffery [this message]
2021-07-23  7:58 ` [RFC PATCH 2/6] pinctrl: Add hook for device-specific map parsing Andrew Jeffery
2021-07-23  7:58 ` [RFC PATCH 3/6] leds: pca955x: Relocate chipdef-related descriptors Andrew Jeffery
2021-07-23  7:58 ` [RFC PATCH 4/6] leds: pca955x: Use pinctrl to map GPIOs to pins Andrew Jeffery
2021-08-10 13:54   ` Linus Walleij
2021-08-11  0:19     ` Andrew Jeffery
2021-07-23  7:58 ` [RFC PATCH 5/6] ARM: dts: rainier: Add presence-detect and fault indictor GPIO expander Andrew Jeffery
2021-07-23  7:58 ` [RFC PATCH 6/6] pinctrl: Check get_group_pins callback on init Andrew Jeffery
     [not found] ` <CAHp75VeQML7njMZ6x8kC-ZJVexC1xJ6n1cB3JneVMAVfuOJgWw@mail.gmail.com>
2021-07-28  5:43   ` [RFC PATCH 0/6] leds: Fix pca955x GPIO pin mappings Andrew Jeffery
2021-07-28  9:13     ` Andy Shevchenko
2021-07-29  0:38       ` Andrew Jeffery
2021-07-29  7:40         ` Andy Shevchenko
2021-08-03  4:07           ` Andrew Jeffery
2021-08-03 10:33             ` Andy Shevchenko
2021-08-04  4:55               ` Andrew Jeffery

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